Update README.md
Fixed readme.
go fmt
Merged changes from https://github.com/oschmid/appenginetesting
updated readme.
Added the ability to log a user in and out for testing user functions.
added some tests for documentation.
updated readme with new links.
updated readme with new links.
Updated to work(ish) with 1.7.5.
updated readme to describe fixing 1.7.5 incompatibility.
Merge branch 'release/v0.4'